A former missile silo in Kansas is being turned into under-ground condos for doomsday scenarios. Larry Hall, the project engineer in an interview talks about the technologies
“The lighting technology needs to take into account frequency to minimize depression while at the same time produce energy efficient lighting with a high mean time between failures. The new LED products fit this requirement like a glove. The LED fixtures and bulbs use a fraction of the energy, they are full-spectrum, and many have a bulb life in excess of 50,000 hours. We standardize on a few models and maintain spares that can be used throughout the facility.
Plumbing is different only in the fact that the sewage must be pumped up as compared to gravity based systems in above ground structures. The water is the same except it is purified by reverse osmosis and ultraviolet light to get water that is many time more pure than what is found in most municipalities or households.
Ventilation is much different because the primary emphasis on the underground survival facility is to purify the air through the use of NBC filtration systems. In addition, our air is first cleaned by a water curtain that removes large contaminants from the air such as ash, sand, or dust. The pre-filter water curtain means that the NBC filters stay cleaner longer and minimizes the amount of maintenance.”
and the possible apocalypse scenarios
“Economic collapse, Pandemics, Terror, Global Climate Change, Super volcano, Earthquakes, Tsunamis, Solar flares, Pole shifts, Planet X, OORT Cloud, civil unrest......”